Functions
Information functions
· Collecting and information preprocessing
o Data collection
o Filtering
o Scaling
o Linearization
o Comparison with the setpoints of warning and alarm
· Display on automated workplace videograms
o Status of technological units and shutoff valves in form of dynamic mnemonic symbols
o Operating modes of the equipment in form of text banners
o Controlled parametres in digital form, in form of histograms, virtual analog devices, trends and graphs
· The alarm of deviations, automatic Load transfer, interlocks and protections
o Sound alarm
o Initiative creating of text messages on displays
o Alarm by color and blinking on displays
o Ability to connect of voice alarm
· Calculations of:
o Parameters by the formulasandtabular dependence
o Main parameters on indirect
o Technical and economic indicators
o Operating time of technological equipment (motor-hours, quantity of starts, etc.)
o Parameters to optimization of technological process
· Registration and archiving of the data
o Continuous registration of:
§ Values of technological parameters with increments 10мс (1s, 1m, 1h) for last 30 days (you can increase the depth of retro )
§ States, deviations, alarms, commands, failures etc. (300 000 events with an option to increase)
§ Actions of operating personnel (operators, engineers, admin)
§ Commands from related automation systems
§ Diagnostics signals the state of SHC
o Initiative registration of:
§ Emergencies (5 minutes before and 5 minutes after of the initiative signal with step-type behaviour 200 ms)
§ Contingency situations (1.5 minutes before and 1.5 minutes after of the initiative signal with step-type behaviour 10 ms)
o Creating and printing by the command of the engineer ACS of the following documents:
§ The report about analogue parameters
§ The report about discrete parameters
§ Graphs of transient processes
§ The report about warning and alarm
§ Files of emergency events
§ Files of abnormal situations
§ The report about changes of protections state
§ The report about changes of regulators state
§ The report about changes of blockings state
§ The report about actions of protections
§ Technical and economic indices, operating time and the equipment state
§ The report about SHC's malfunction
§ The report about actions of the operator and the engineer
§ List of users
§ The report about the administrator actions
o Information storage on hard disks with ability to record DVD.
· Communication with adjacent systems of automatics
o Interfaces - any standard interface by request
Control functions
· Remote (manual) control
o Switching on and off of any executive mechanism of discrete action
o Control to buttons MORE / LESS for actuators with analogue action
o Changing of presettings of any control loop
§ All the actions in a mode of remote control, are possible only in presence of resolving signal
· Logic (discrete) control
o Step-by-step control
o Functional-group control
o Automatic start, stop and switching of process equipment mode
· Automatic analogue control (regulation)
o Feed fuel control (gas, steam, oil, etc.) at start-up and operating modes
o Restrictive regulation
o Capacity and frequency regulation
o Regulation of technological parametres (temperature, pressure, the expense, level, etc.)
o Impulse control of mechanisms of constant speed
o Analogue control of proportional executive mechanisms
o Realisation of typical laws of regulation: P, PI, PD, PID
· Emergency protection
o Technological blocking
o Automatic inclusion of a reserve
o Emergency stop
· Synchronization of the generator with electrical network to parallel operation
o Measurement of the phase difference of generator voltage and the network voltage
o Control of normal slipping
o Definition of the moment of inclusion
o Command transfer to the breaker with a preset lead-time
o Definition of real time of the high-voltage switch inclusion
o Display of synchronization process on the screen(virtual synchronoscope)
Automatic diagnostics of:
· Sensors
o Communication line control
o Malfunction estimation on a gradient in a zone of admissible values
· Executive mechanisms
o Control of communication lines, integrity of windings, power supplies presence
o Serviceability control on time of operation of trailer switches
o Serviceability assessment of actuators with analog action by the dynamics of performing the given commands
· Measurement channels
o Measurement of control voltage
· Channels of input of discrete signals
o Check by control signals
· Controllers of processing of the information
o Self-testing
o Checking of:
§ Communications between processors of bottom level and the upper level
§ Communications between processors of bottom level
§ Exchange errors
§ Errors of the control sums
§ Passages of the test of channel Ethernet
§ Integrity of the downloaded software
· Data exchange channels
o Control bits
o The control sums
o Counters
· Target devices
o Checking on operation of output relays
o Checking the value of output signal of contours of regulation
o Checking relays